Bosch Appliances D7412GV3 On-Board Points, Terminals 11 to 22 Description, Point Sensor Loops

D9412GV3/D7412GV3 Operation and Installation Guide 8.0 On-Board Points

7.11.3Installing the D928 Mounting

Mount the D928 on the lower right side of the enclosure using the screws provided with the switcher.

Wiring

The D928 has two flying leads. The green lead monitors AC power. The black lead is the ground reference for the AC Power LED.

1.Connect the green lead from the D928 to Terminal 1.

2.Connect the black lead from the D928 to Terminal 9.

Telephone Connections

1.Plug one end of the ribbon cable provided into J4 on the D928. Plug the other end of the ribbon cable into the ACCESSORY connector on the control panel.

2.Plug one end of the D162 phone cord provided into the telco jack. Plug the other end of the phone cord into the TELCO jack on the control panel. Refer to Table 8 for phone cord lengths.

Table 8: Phone Cord Lengths

Phone Cord	Length
D161	2.4 m (8 ft)
D162	61 cm (2 ft)

3.Plug one end of a D161 or D162 phone cord into J1 on the control panel. Plug the other end of the phone cord into the RJ31X or RJ138X for the primary telephone line.

4.Plug one end of a D161 or D162 phone cord into J2 on the control panel. Plug the other end of the phone cord into the RJ31X or RJ138X for the secondary telephone line. Refer Table 8 for phone cord lengths.

7.11.4 D928 Status LEDs

Four LEDs mounted on the front edge of the D928 Module show the status of AC power for the control panel, the status of the two telephone lines, and communication failure (Figure 11 on page 34). When programmed and operating normally, only the green AC power status LED is lit.

AC Power LED

The green AC Power Status LED lights when AC power is applied to Terminals 1 and 2 on the control panel.

Phone Line Fail LEDs

Two yellow Phone Line Status LEDs (one for the primary telephone line, one for the secondary telephone line) light if the telephone line is not within the operating range. The control panel monitors the faulty telephone line for the programmed interval before indicating a trouble condition. Refer to Section

7.8Telephone Line Monitor on page 29 for a description of phone line monitor operation.

Communication Failure LED

The yellow Communication Failure LED lights when the system is in communication failure. The LED turns off when communication restores. Refer to Section 7.10 Communication Failure on page 29.

Dedicated telephone lines might be required for UL 864 Commercial Fire applications. Check with your Authority Having Jurisdiction (AHJ).

8.0On-Board Points

8.1Terminals 11 to 22 Description

The control panel provides eight on-board points. Each point functions independently and does not interfere with the operation of the others. The control panel monitors the sensor loops for normal, shorted, or open conditions between an input terminal (11, 13, 14, 16, 17, 19, 20, or 22) and any of the point common terminals (12, 15, 18, and 21). The programming for the point determines how the control panel responds to those conditions. Refer to the D9412GV3/D7412GV3 Program Entry Guide

(P/N: F01U170807) for point programming options. The control panel also monitors the sensor loops for ground fault conditions if S4 is latched (ground fault detect enabled).

8.2Point Sensor Loops

Not for use in Fire Applications.

When wiring the on-board points (Figure 13), install a 1 kΩ resistor at the far end of the sensor loop to provide a reference for supervision. Dry-contact sensing devices can be connected in series (normally-closed) or in parallel (normally-open) to any of these loops.

The number of normally-open and normally-closed detection devices each sensor loop can supervise is limited only by the resistance on the loop. The total resistance for the wire length and contacts, minus the end-of-line (EOL) resistor, must not exceed 100 Ω.

Bosch Security Systems, Inc. 10/10 F01U143070-03 31